Helmet



FIG. 1 is a front isometric view of a first embodiment of a helmet illustrating a helmet liner and straps for environment.

FIG. 2 is a right side view of the helmet of FIG. 1 illustrating the helmet liner, straps, and a fit adjustment mechanism for environment.

FIG. 3 is a rear view of the helmet of FIG. 1 illustrating the helmet liner, straps, and fit adjustment mechanism for environment.

FIG. 4 is a front isometric view of the helmet of FIG. 1.

FIG. 5 is a front view of the helmet of FIG. 1.

FIG. 6 is a rear view of the helmet of FIG. 1.

FIG. 7 is a right side view of the helmet of FIG. 1.

FIG. 8 is a left side view of the helmet of FIG. 1.

FIG. 9 is a top view of the helmet of FIG. 1.

FIG. 10 is a bottom view of the helmet of FIG. 1.

FIG. 11 is a left side view of the helmet of FIG. 1 showing a first group of movable vent shutters in an alternate open position.

FIG. 12 is a top view of the helmet of FIG. 11.

FIG. 13 is a left side view of the helmet of FIG. 1 showing a second group of movable vent shutters in an alternate open position.

FIG. 14 is a top view of the helmet of FIG. 13.

FIG. 15 is a left side view of the helmet of FIG. 1 showing the first and second groups of movable vent shutters each in an alternate open position.

FIG. 16 is a top view of the helmet of FIG. 15.

FIG. 17 is a front isometric view of a second embodiment of a helmet.

FIG. 18 is a front view of the helmet of FIG. 17.

FIG. 19 is a rear view of the helmet of FIG. 17.

FIG. 20 is a right side view of the helmet of FIG. 17.

FIG. 21 is a left side view of the helmet of FIG. 17.

FIG. 22 is a top view of the helmet of FIG. 17; and,

FIG. 23 is a bottom view of the helmet of FIG. 17.

The broken lines are provided for illustrative purposes only and form no part of the claimed design. 

CLAIM We claim the ornamental design for a helmet, as shown and described. 